<!DOCTYPE html>
<script>
navigator.serviceWorker.getRegistration(".").then(function(registration) {
registration.unregister().then(function(success) {
if (success) {
window.parent.postMessage({status: "unregistrationdone"}, "*");
}
}, function(e) {
dump("Unregistering the SW failed with " + e + "\n");
});
});
</script>